My church is forming a safety team. One question has been how to coordinate and train multiple weapons-holders responding to a single threat? In a church setting, your responders may be located at various positions in the auditorium, and most likely with others around them. All of them are going to have the initial "I must do something!" response. But there's got to be some way to coordinate the effort to avoid total chaos and potential "friendly" damage. Are there any good books or videos available for this?